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Bazooka MBTA8250D

Marine BT Series 8" Bass Tube with built-in 160-watt amplifier

Item # 204MBTA825

Want to make a big splash with your boat's sound system? Bazooka's marine-ready MBTA8250D 8" amplified Bass...

Want to make a big splash with your boat's sound system? Bazooka's marine-ready MBTA8250D 8" amplified Bass...

Need help?
Contact our Virginia-based experts.

Item # 204MBTA825

Ships from manufacturer

Need help?
Contact our Virginia-based experts.

About the Bazooka MBTA8250D

Big bass for the great outdoors

Want to make a big splash with your boat's sound system? Bazooka's marine-ready MBTA8250D 8" amplified Bass Tube puts out powerful bass that'll add low-end punch to your music out on the water. This space-saving sub offers an ideal solution if you don't want to make a lot of modifications to your vessel.

Big bass for the great outdoors

Want to make a big splash with your boat's sound system? Bazooka's marine-ready MBTA8250D 8" amplified Bass Tube puts out powerful bass that'll add low-end punch to your music out on the water. This space-saving sub offers an ideal solution if you don't want to make a lot of modifications to your vessel.

The Bass Tube features an 8" woofer and a built-in Class D 160-watt amp housed in a UV- and moisture-resistant enclosure, and it comes with an installation kit that includes a power/signal harness and mounting straps. Speaker- and preamp-level inputs ensure it can be connected to almost any radio.

An optional wired Remote Bass Control Module gives you independent cockpit volume control of the bass output.


Product highlights:

  • marine-ready 8" amplified Bass Tube
  • waterproof 8" woofer with foam surround
  • power output: 160 watts RMS (250 watts peak)
  • variable low-pass filter (60-250 Hz, 18 dB/octave)
  • subsonic filter (12 dB/octave at 35 Hz)
  • frequency response: 35-250 Hz
  • sensitivity: 102 dB
  • speaker- and preamp-level inputs
  • 8-9/16"W x 10-1/16"H x 18-3/4"D
  • warranty: 1 year
  • Our 60-day money-back guarantee
  • MFR # MBTA8250D

What's in the box:

  • One 8.0" amplified marine tube-style subwoofer with attached grille
  • 10" Signal wiring harness
  • Power wiring harness (has an 11" power lead and 23" ground lead)
  • 1 In-line fuse holder with a 20A fuse (has 4" leads on both sides)
  • 2 Yellow butt connectors
  • 1 Crimp-on ring
  • One 1/2" self-tapping screw
  • Two 3' mounting straps (each strap has an attached plastic mounting base)
  • Four 1" self-tapping screws
  • Installation Manual

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More details on the Bazooka MBTA8250D

Pat M.

Product Research



Marine Grade Construction: The MBTA8250D features an 8" waterproof poly woofer. The woofer is powered by a built-in 160-watt (250 watts peak) digital amplifier. The patented Bass Tube enclosure design eliminates bass standing waves for high accuracy, and superior efficiency. The enclosure is certified salt fog and UV resistant for 5 years and the included mounting hardware is stainless steel.

Low-pass Filter: The MBTA8250D has a low-pass filter that can be adjusted from 60 to 250 Hz.

2nd Woofer Output: The MBTA8250D has a high-level output for adding an optional MBT8014 (204MBT8014) passive bass tube to double the bass. The amplifier output increases to 275 watts (peak) when the 2nd woofer is connected.

Remote Level/Crossover Control: Using the optional RBCM-250D remote control (204RBCM250), you can control the bass output level and crossover frequency of the subwoofer from a remote location.


Level Control: There is a rotary control on the rear-panel that allows you to adjust the level of the subwoofer.

Crossover Control: The unit's rotary control is found on the rear-panel and allows you to adjust the low-pass filter from 60 to 250 Hz.

Power LED: If power, ground and remote are connected properly, the LED on back of the unit will illuminate in green.


Remote Control: Phone-type jack for use with an optional remote control; found on rear-panel

Power Harness: Two quick-slides for use with supplied power harness; found on rear-panel

Signal Harness: 14-pin Molex plug for use with supplied signal harness


Installation: Each mounting strap has an attached mounting base that can be secured to your vehicle using the supplied self-tapping screws. Once the mounting bases are installed, the tube is held in place by the mounting straps. For best results, the tube should be mounted facing into a corner, and there should be 2" to 4" between the woofer and the corner into which the woofer is pointing.

Required Accessories:

  • Power Wire: The 12-gauge power lead is only 11" long, so additional wire is required to extend it to the battery. Additional power wire must be crimped or soldered to the Bazooka's power lead.
  • Ground Wire: The 12-gauge ground lead is also only 23" long, and may need to be extended. Additional ground wire must be crimped or soldered to the Bazooka's ground lead.
  • Speaker Wire: required only when using the high-level inputs
  • RCA Patch Cord: required only when using the low-level inputs
  • Remote Turn-on Wire: required to connect the remote turn-on lead to the amplifier turn-on lead of your radio

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Customer Q&A

7 questions already asked

Can you mount this vertically?
[ Brian  Jul 12, 2020 ]
3 answers
I'm sure you can, mine is horizontal, but if you have something to bounce off I don't think there will be a problem.
[ ERIC  Jul 13, 2020 ]
The mounting system that comes with the speaker is a couple of straps that wrap around the speaker. You would have to modify the mounting process. If you can handle that, the speaker works in any orientation.
[ Scott  Jul 13, 2020 ]
I would not think the straps sent with this unit would hold it in place vertically. You could get large screw clamps ( for ductwork). from local hardware store And try that.
[ Andrew  Jul 12, 2020 ]
Does this put out adequate bass at only 8". Not looking for earth moving bass, but I would like to round out my jl 600/6 speaker set up without breaking the bank. Wetsounds AS 10 also in consideration vs just building up a mono amp and 10" set up. Easy and cheap would be preferable if this can get the job done. It would have to go in a storage locker. thoughts?
[ Ross  Jun 23, 2020 ]
2 answers
I added this to my 23' Formula and put it in the cuddy. It is not earth moving, but it does a nice job of rounding out the sound from the Kenwood marine head with 4 Infinity 6 1/2" speakers. I also have an Alpine Amp for the 4 speakers. It works great for my teenage kids
[ Scott  Jul 13, 2020 ]
It sounds like this subwoofer will work for you. We have advisors that you can reach by calling 1-800-324-9695 who will discuss all your goals and bass level preferences along with existing gear and application to give a personal recommendation on if this sub will work or if a different one is needed.
[ Paul  Jul 12, 2020 ]  Staff
Can I get an extra wiring harness (or harnesses/plugs) for switching vehicles?
[ K.David  Jun 16, 2020 ]
1 answer
You sure can because we carry a replacement wiring harness kit for it:
[ Paul  Jun 30, 2020 ]  Staff
Can this be painted? The white is not ideal for the location I plan to install this.
[ Aaron  Jun 10, 2020 ]
4 answers
of course, it's plastic. I probably would not paint the end the sound comes out of. But the body could be painted. I think they also have it in black.
[ Scott  Jul 13, 2020 ]
I not sure of that.
[ CARLOS  Jun 12, 2020 ]
I'm not sure buddy. It's a pretty tough unit. I wouldn't see why not. I've had it out in the elements on a Craig cat boat.(Look it up) and it's been great. No problems out of it.
[ Stephen  Jun 11, 2020 ]
Yes , I painted mine black . Make sure you use paint for the fiberglass body. Picked my paint up at Menards. I disassembled. Taped off the electrical connections. Turned out great
[ Andrew  Jun 10, 2020 ]
Connection if I have another existing sub: I have a 5 channel amp running 4 speakers and a sub already. Can I ad this to the system since it is self amplified? How would I wire it? Thanks
[ jdavis  Mar 23, 2017 ]
1 answer
For additional details on fit or installation please contact an Advisor by phone (1-800-324-9695) or online chat. They will be able to pull up your vehicle and give you the details on how everything connects and what you will need for an installation in your vehicle.
[ Kenny  Mar 23, 2017 ]  Staff
How many amps does it draw? Does it have an inline fuse?
[ John  Mar 12, 2017 ]
1 answer
Not sure how many amps it draws but it does have an inline fuse. I really like my sub.
[ KEN  Mar 13, 2017 ]

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